This add-on is not compatible with your version of SeaMonkey because of the following:

Version 2.0.0
Released December 4, 2014
202.1 kB
Works with
Firefox for Android 19.0 - 37.0, Firefox 19.0 and later, SeaMonkey 2.16 and later, Thunderbird 24.0 and later

-Revised code editor-Report a style as broken when uninstalling-Configure which styles show up in the toolbar button - see the prefs starting with extensions.stylish.buttonStylesDisplay. Values are show, submenu, hide-Support for major changes in future versions of Firefox (e.g. Electrolysis)-Pale Moon compatibility-Numerous bug fixes

This add-on is not compatible with your version of SeaMonkey because of the following:

Version 1.4.1
Released January 20, 2014
291.1 kB
Works with
Firefox for Android 14.0 - 30.0, Firefox 4.0 and later, SeaMonkey 2.1 and later, Thunderbird 5.0 and later

Switch from AGENT to AUTHOR stylesheet registration. Stylish for Firefox will now act more like Chrome, Greasemonkey, and Tampermonkey as it relates to where styles are inserted into the cascade. This may break some styles - style authors should read this updated document for details if they suspect this change broke their style. Users should check for updates to their styles as many styles that were broken have been fixed.

This add-on is not compatible with your version of SeaMonkey because of the following:

Version 1.4.0
Released November 5, 2013
290.6 kB
Works with
Firefox for Android 14.0 - 28.0, Firefox 4.0 and later, SeaMonkey 2.1 and later, Thunderbird 5.0 and later

-Install styles by URL - click a button from the addons manager or mobile manage page and enter URLs of styles to install.-Updates for styles on Android-For new users, icon will be added to navigation bar instead of addons bar.-Fixes bug: Multiple copies of the same error reported when Browser Console is open-Fixes bug: Non-CSS errors are reported in edit dialog.

This add-on is not compatible with your version of SeaMonkey because of the following:

Version 1.3.1
Released November 21, 2012
269.9 kB
Works with
Firefox for Android 14.0 - 20.0a1, Firefox 4.0 and later, SeaMonkey 2.1 and later, Thunderbird 5.0 and later

-When editor textarea is not focused, right clicking on the textarea does not focus it-Style with two or more "#" in the name doesn't work-App styles marked as global since Firefox 16-Contents of update requests are not validated-Updated French localization

This add-on is not compatible with your version of SeaMonkey because of the following:

Version 1.2.3
Released September 26, 2011
247.8 kB
Works with
Firefox 4.0 and later, SeaMonkey 2.1 and later, Thunderbird 5.0 and later

-Updates the URL of previously installed styles to the new update server. This will help reduce site load and keep it responsive.-Adds pref extensions.stylish.updatesEnabled (default=true) for turning off updates in the Add-ons window.-Refreshed icons.-Drops support Firefox 3.6.

-Updated the toolbar button to act more like other toolbar buttons-New default in Firefox 4 is to use the Add-ons Manager when choosing Manage Styles. The setting extensions.stylish.manageView is still available - 0 for add-ons manager, 1 for stand-alone dialog, 2 for sidebar-Added links for creating a new style and going to userstyles.org in add-ons manager-Removed Page Style overlay-Fixes for latest Firefox, Seamonkey, and Thunderbird-Updated Czech and Japanese localizations-Added partial Romanian localization

-Right-click a group of styles in the manage window and perform actions on all them (disable, enable, find updates, etc.)-New translations - Hebrew, Argentinian Spanish, and Estonian.-Some minor bug fixes